Finding the Fourth Proportional to 312,656.68, 431,524.38 and 178,520.68
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Solution
The fourth proportional to 312,656.68, 431,524.38 and 178,520.68 is: 246,391.75
Step by Step Solution
- Step 1: Write the proportion equation
312,656.68 : 431,524.38 = 178,520.68 : x - Step 2: Convert to fraction form
312,656.68/431,524.38 = 178,520.68/x - Step 3: Cross multiply
312,656.68x = 431,524.38 × 178,520.68 - Step 4: Simplify right side
312,656.68x = 77,036,025,754.18 - Step 5: Solve for x
x = 77,036,025,754.18/312,656.68 - Step 6: Final answer
x = 246,391.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.